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Cationic UV‐Curing of Shape Memory Biobased Polyurethanes Sensing Low Heat.

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Title: Cationic UV‐Curing of Shape Memory Biobased Polyurethanes Sensing Low Heat.
Authors: Atif, Muhammad1 (AUTHOR) chemistatif@yahoo.com, Ghani, Ambreen1 (AUTHOR), Ahmad, Muhammad Hassan1 (AUTHOR), Shah, Syed Zulqarnain1 (AUTHOR), Imran, Muhammad2 (AUTHOR), Habib, Nimra1 (AUTHOR)
Source: Polymers for Advanced Technologies. Oct2024, Vol. 35 Issue 10, p1-10. 10p.
Subjects: Photochemical curing, Body temperature, Somatic sensation, Drug carriers, Human body, Shape memory polymers
Abstract: The environmental problems caused by thermal reactions have prompted the search for new approaches. Photochemical curing, which uses light energy, offers a sustainable solution for polymerizing complex polymers, reducing energy consumption, and emissions. Current study involves cationic UV‐curing of biobased polyurethanes (PU) with a thermo‐responsive shape memory behavior on very low temperature almost equal to human body temperature. This product has a potential to be utilized as drug carrier or related biomedical applications, as well as self‐tightening materials against human body heat. Polymer has been designed from sesame oil, with slight modification through a facile epoxidation approach. Main objectives of this research were to prepare biobased PU recipe; to utilize a specially designed UV‐curing approach for this synthesis; and to develop shape memory properties upon sensing human body temperature. Prepared material has been analyzed through FTIR, SEM, TGA, DSC, water absorption capacity (WAC), and gel contents (GCs). Shape memory behavior has been tested in both air and water against a range of temperatures (35°C–80°C). At 35°C in 208 s, prepared sample, presented 96.60% Rr and 90.56% Rf, whereas at 80°C in 55 s Rr increased to 98.33% and Rf increased to 100%. Hydrophobic nature of sample was confirmed by 4.1% water absorption in 48 h. [ABSTRACT FROM AUTHOR]
Copyright of Polymers for Advanced Technologies is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Cationic UV‐Curing of Shape Memory Biobased Polyurethanes Sensing Low Heat.
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  Data: <searchLink fieldCode="AR" term="%22Atif%2C+Muhammad%22">Atif, Muhammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chemistatif@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Ghani%2C+Ambreen%22">Ghani, Ambreen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ahmad%2C+Muhammad Hassan%22">Ahmad, Muhammad Hassan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shah%2C+Syed Zulqarnain%22">Shah, Syed Zulqarnain</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Imran%2C+Muhammad%22">Imran, Muhammad</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Habib%2C+Nimra%22">Habib, Nimra</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Polymers+for+Advanced+Technologies%22">Polymers for Advanced Technologies</searchLink>. Oct2024, Vol. 35 Issue 10, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Photochemical+curing%22">Photochemical curing</searchLink><br /><searchLink fieldCode="DE" term="%22Body+temperature%22">Body temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Somatic+sensation%22">Somatic sensation</searchLink><br /><searchLink fieldCode="DE" term="%22Drug+carriers%22">Drug carriers</searchLink><br /><searchLink fieldCode="DE" term="%22Human+body%22">Human body</searchLink><br /><searchLink fieldCode="DE" term="%22Shape+memory+polymers%22">Shape memory polymers</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The environmental problems caused by thermal reactions have prompted the search for new approaches. Photochemical curing, which uses light energy, offers a sustainable solution for polymerizing complex polymers, reducing energy consumption, and emissions. Current study involves cationic UV‐curing of biobased polyurethanes (PU) with a thermo‐responsive shape memory behavior on very low temperature almost equal to human body temperature. This product has a potential to be utilized as drug carrier or related biomedical applications, as well as self‐tightening materials against human body heat. Polymer has been designed from sesame oil, with slight modification through a facile epoxidation approach. Main objectives of this research were to prepare biobased PU recipe; to utilize a specially designed UV‐curing approach for this synthesis; and to develop shape memory properties upon sensing human body temperature. Prepared material has been analyzed through FTIR, SEM, TGA, DSC, water absorption capacity (WAC), and gel contents (GCs). Shape memory behavior has been tested in both air and water against a range of temperatures (35°C–80°C). At 35°C in 208 s, prepared sample, presented 96.60% Rr and 90.56% Rf, whereas at 80°C in 55 s Rr increased to 98.33% and Rf increased to 100%. Hydrophobic nature of sample was confirmed by 4.1% water absorption in 48 h. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers for Advanced Technologies is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/pat.6615
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      – Code: eng
        Text: English
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        PageCount: 10
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      – SubjectFull: Photochemical curing
        Type: general
      – SubjectFull: Body temperature
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      – SubjectFull: Somatic sensation
        Type: general
      – SubjectFull: Drug carriers
        Type: general
      – SubjectFull: Human body
        Type: general
      – SubjectFull: Shape memory polymers
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      – TitleFull: Cationic UV‐Curing of Shape Memory Biobased Polyurethanes Sensing Low Heat.
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            NameFull: Atif, Muhammad
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              Text: Oct2024
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              Y: 2024
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